RTOS/AM5728: base on AM5728 and RTOS,how to use dcan1 on ipu

jianbingChen

Part Number: AM5728

Tool/software: TI-RTOS

hello,base on AM5728 and RTOS,how to use dcan1 on ipu? can you give me some document to refer, please, thank you so much.

over 6 years ago

0 Biser Gatchev-XID over 6 years ago

TI__Guru**** 393215 points

Hi,
Please note that due to US holiday the responses may be delayed until the week of November 26th.

0 Garrett Ding over 6 years ago in reply to Biser Gatchev-XID

TI__Mastermind 43296 points

H jianbin,

You may refer to DCAN_BasicExample_evmAM572x_m4TestProject in PDK\packages\ti\csl\example\dcan\dcanLoopback\rtos. The latest Processor SDK PDK for AM572x is available at www.ti.com/.../PROCESSOR-SDK-AM57X

Regards
Garrett

0 jianbingChen over 6 years ago in reply to Garrett Ding

Intellectual 360 points

hello,I had refer to the rtos version is 04.03.00.05 in PDK\packages\ti\csl\example\dcan\dcanLoopback\,and i had add the code that access dcan to my project. However, the dcan seem didn't had any response,and i ran the command canconfig can0 bitrate 1000000、canconfig can0 start on linux shell,and then reload the ipu firmware,
dcan can sent data,but the receive interrupt can't response. does the rtos version 04.03.00.05 exist any bug?

0 Garrett Ding over 6 years ago in reply to jianbingChen

TI__Mastermind 43296 points

jiangbing,

>>canconfig can0 start on linux shell,
Did you update the Linux DCAN driver to work with IPU?

The known issue of release 04.03.00.05 is listed here - software-dl.ti.com/.../Release_Specific.html

And it does list PRSDK-2196 - DCAN Diag test failed on AM57x IDK Platforms.

Regards,
Garrett

0 jianbingChen over 6 years ago in reply to Garrett Ding

Intellectual 360 points

I have three questions:

Q1:the rtos version what i had used was 04.03.00.05,and my Platform is AM5728 EVM,does it exist the same problem to AM572x IDK Platforms that didn't support the dcan test?

Q2:dose the dcan test can be supported to the latest rtos version(05.01.00.11) with AM5728 EVM?

Q3:I want to use dcan1 for normal mode,and i don't know the configurate flow with the registers, can you offer me some documents to refer.

thank you very much!

0 Garrett Ding over 6 years ago in reply to jianbingChen

TI__Mastermind 43296 points

Jianbing,

The dcan diag test is only performed on evmK2G and idk am571/2/4x, see PDK packages\ti\board\diag\dcan\build.

Would the TRM section 24.10.4.12 CAN Operation help for configuration flow? www.ti.com/.../spruhz6

Regards,
Garrett

0 jianbingChen over 6 years ago in reply to Garrett Ding

Intellectual 360 points

thank you for your reply,and my actual application is use the ipu1 to access the dcan1 on AM5728 EVM,can I realize this requirement by refer to the pdk_am57xx_1_0_12\packages\ti\csl\example\dcan demo?

0 Garrett Ding over 6 years ago in reply to jianbingChen

TI__Mastermind 43296 points

Jianbing,

Yes, DCAN_BasicExample_evmAM572x_m4TestProject is created for demonstrating dcan on IPU.

Regards,
Garrett

0 jianbingChen over 6 years ago in reply to Garrett Ding

Intellectual 360 points

hello,I had debug my project, and the transmission function is ok.when I debug the reception function,it can receive the data,however, the interrupt service routine couldn't be triggered.I don't know how to configurate the interrupt function,about the receive interrupt,I have three question:
Q1:what's the registers need to configurate for receive interrupt
Q2:what's the value need to configurate for receive interrupt
Q3:what's the configuration flow for receive interrupt

0 Garrett Ding over 6 years ago in reply to jianbingChen

TI__Mastermind 43296 points

jianbing,

You need configure interrupt cross bar register and dcan control register to enable the dcan interrupt.

Refer to the following sections for each register:

Table 24-1103. DCAN Hardware Requests
24.10.4.2 Interrupt Functionality
24.10.4.12.2 CAN Message Transfer (Normal Operation)

The DCANAppConfigParityIntr() function in dscan_loopback_example_main.c is a good reference.

Also the cross bar module description may help though it's not specific for dcan.
software-dl.ti.com/.../IntXbar.html

Regards,
Garrett

0 jianbingChen over 6 years ago in reply to Garrett Ding

Intellectual 360 points

hello,I had debug the code(pdk_am57xx_1_0_10/packages/ti/csl/example/dcan/dcanLoopback/rtos/dcan_loopback_rtos_main.c) ;the code

CSL_xbarIrqConfigure(CSL_XBAR_IRQ_CPU_ID_IPU1, CSL_XBAR_INST_IPU1_IRQ_30, intrSource);

it seem that the api (CSL_xbarIrqConfigure) had not effect, did you had test it OK?

0 Garrett Ding over 6 years ago in reply to jianbingChen

TI__Mastermind 43296 points

jianbing,

The CSL_xbarIrqConfigure function is widely used in processor SDK, should work as is.

Regards,
Garrett

0 jianbingChen over 6 years ago in reply to Garrett Ding

Intellectual 360 points

hello,I had solved the problem finally, what my solution is replace the

CSL_xbarIrqConfigure(CSL_XBAR_IRQ_CPU_ID_IPU1, CSL_XBAR_INST_IPU1_IRQ_30, intrSource);

whth

IntXbar_disconnectIRQ(30);
IntXbar_connectIRQ(30, intrSource);

thank you.

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RTOS/AM5728: base on AM5728 and RTOS,how to use dcan1 on ipu